Don Coppersmith, Igor Pak
Probability Theory and Related Fields
A new algorithm for computing Hadamard transforms is presented. If n is a power of four, then the new algorithm uses ⅞ n logn multiply/adds to compute a Hadamard transform of length n. © 1994 IEEE
Don Coppersmith, Igor Pak
Probability Theory and Related Fields
Béla Bollobás, Don Coppersmith, et al.
SIAM Journal on Discrete Mathematics
Don Coppersmith
Cryptologia
Ephraim Feig
Journal of Algorithms